摘要:
The present invention relates to a process for the preparation of benzothioxanthene dyestuffs and cyclisation of 3-(2'-aminophenylthio)-benzanathrones wherein the diazotisation and cyclisation are carried out simultaneously in polar, aprotic solvent in the presence of water.
摘要:
The present invention relates to improved processes for the preparation of 1-amino-2,6-dimethylpiperidine whereby the yield is more than 90%. The processes involve the hydrogenation of 1-nitroso-2,6-dimethylpiperidine in the presence of a palladium catalyst which is partly poisoned with iron ions, in an aqueous solvent, and are characterized by the inclusion of at least one surfactant. The surfactant preferably is anionic or nonionic.
摘要:
A seal (1) for a hydrostatic linear guide with a given adjustment direction (5), with a longitudinal seal section (7, 7′) extending essentially parallel to the adjustment direction (5), and with a transverse seal section (8, 8′) extending essentially transverse to the adjustment direction (5), wherein a first lip seal with a projecting lip portion (12) extends along the longitudinal seal section and a second lip seal with a projecting lip portion (14) extends along the transverse seal section. A height of the projecting lip portion (12) of the first lip seal oscillates in a wave shape in the adjustment direction. With such a seal (1), both a high degree of static oil tightness and also a high degree of dynamic oil tightness are achieved for a hydrostatic linear guide.
摘要:
A flow control valve (11) for a hydraulic line, having an outlet opening (18a) for hydraulic fluid, an inlet opening (18) for hydraulic fluid and a differential pressure regulator (17) for the pressure independent provision of a constant volumetric flow of the hydraulic fluid, and having a setting part (15a) for setting the control behavior of the differential pressure regulator (17), the setting part (15a) having an operating section (27) which is provided so as to be accessible outside the hydraulic line for setting the setting part (15a).
摘要:
A seal (1) for a hydrostatic linear guide with a given adjustment direction (5), with a longitudinal seal section (7, 7′) extending essentially parallel to the adjustment direction (5), and with a transverse seal section (8, 8′) extending essentially transverse to the adjustment direction (5), wherein a first lip seal with a projecting lip portion (12) extends along the longitudinal seal section and a second lip seal with a projecting lip portion (14) extends along the transverse seal section. A height of the projecting lip portion (12) of the first lip seal oscillates in a wave shape in the adjustment direction. With such a seal (1), both a high degree of static oil tightness and also a high degree of dynamic oil tightness are achieved for a hydrostatic linear guide.
摘要:
A hydrostatic mounting of longitudinally displaceably arranged machine parts, which have pressure pockets for hydraulic fluid for building up a hydrostatic pressure between two machine parts, gaps for the hydraulic fluid which are adjacent to the pressure pockets and are delimited by gap faces of the two machine parts, drainage for the reception of hydraulic fluid, and at least one seal arranged between the machine parts and surrounding the drainage sealing against leakage of hydraulic fluid out of the hydrostatic mounting. At least one circumferential portion of the seal has an outer sealing lip and an inner sealing lip. The inner sealing lip is adjacent to the gaps, and a vacuum-loadable drainage portion of the drainage is arranged between the two sealing lips.
摘要:
Linear roller bearing, for carriage (1) which is longitudinally displaceable along rail (2). Carriage (1) has an endless channel (8) for endless circulation of rolling bodies (9). Channel (8) has load section (10), return section (11) and two deflection sections (12) which connect load section (10) to return section (11). Rolling bodies (9) roll in load section (10) on raceways (10a, 10b), and returned, without load, in return section (11). Bodies (9) are deflected in deflection sections (12) between load section (10) and return section (11). Deflection sections (12) have one inner deflection means (14) with inner deflection race (16) and outer deflection means (13) with outer deflection race (15). Inner deflection means (14) and outer deflection means (13) are connected, integrally to one another.
摘要:
A machine for producing a knitted product by at least partly using untwisted fiber material (4) includes at least one stitch forming system, on which stitch-forming elements (3) can be brought into a fibre pick-up position. A thread guide (27) is associated with the stitch-forming system and has a passage (30) for the fibre material (4). A drafting assembly (9) is associated with the stitch-forming system for attenuation of the fibre material and a spinning device (15), which is arranged between the drafting assembly (9) and the thread guide (27) and contains at least one spinning element (16) working with a blast air flow and a transport tube (17) connected thereto. The transport tube (17) contains an outlet end (17d) for the fibre material opening into the thread guide (27). The outlet end (17d) has an inner cross-section (D2), which is exactly the same size as or smaller than an inner cross-section (D1) at an outlet end of the passage (30). The intensity of the blast air flow is selected such that this is sufficient at least to securely transport the fibre material (4) as far as the stitch forming elements (3) without further auxiliary means.
摘要:
An analog signal divided into time frames is encoded and a synthetic signal is formed on the model thereof in a time frame manner via a synthesis filter which is excited by an excitation signal. The excitation signal is formed by at least one adaptive code list containing a plurality of scanning values provided with a defined scanning space. For the actual excitation signal, a segment corresponding to the time frame length is selected from the plurality of scanning values via a speech-based frequency parameter which can take non-integer values and, in such a case, the values intermediate to the scanning values defined by the speech-based frequency parameter are formed in such a way that the time space between the intermediate values and the scanning values is reduced and the totality of the intermediate and the scanning values is used for forming the excitation signal.
摘要:
In addition to the transmission of a tone signal (ts) according to the RFC standard 2833 via a network using Internet protocol, the tone signal is transmitted in the data packets (dp). Subsequently, the phase difference (Δφ) between the transmitted tone signal (ts) and the generated tone signal (ts′) is ascertained, before beginning the insertion of the generated tone signal (ts′) in the data packets (dp), and compared to a predetermined phase difference (φv). If the ascertained phase difference exceeds the predetermined phase difference (Δφ,φv), the phase of the generated tone signal (ts′) is changed by a predetermined phase (φ) with the aid of the tone generator (TG). The ascertainment of the phase differences (Δφ) and the change of the phase (φ) of the generated tone signal (ts′) is repeated until the ascertained phase difference is less than the predetermined phase difference (Δφ,φv), upon which instead of the transmitted tone signal (ts), the generated tone signal (ts) is inserted into the data packets (dp). A substantial advantage of the invention can be seen in that a phase detector does not have to be continuously active for the synchronization, but rather the synchronization must only be performed if a tone signal (ts) or tone information (ti) is received and the insertion of the generated tone signal (ts′) is imminent.